On Thursday, Jan 22, 2004, at 07:25 US/Pacific, Olin Lathrop wrote:

> The reason is so that each pin wakes up in the most benign state from
> the
> external circuit point of view.  Both analog and digital inputs would
> be
> high impedence, but digital inputs can cause larger currents and
> undesirable
> behaviour internally when held at intermediate voltages for long
> periods of
> time.  Therefore waking up a pin as analog when there is a choice is
> safer.

Yes, this makes lots of sense.  But the sort of issue that I'm talking
about
is that it took me a while to discover that I had to configure the
comparator
rather than the A-D to get GP output to work right, and I'm still not
clear
WHY having the comparator in its default state interfered with digitial
output;
I just fiddled with things by trial and error till it worked right...
:-(

BillW

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